Super low loss motor lamination steel

Details Super low loss motor lamination steel Super low loss motor lamination steel

1997-12-08

1999-12-28

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148112, H01F 1147

Patent

active

060076429

ABSTRACT:
The present invention is directed to a low loss motor lamination steel having a relatively low alloy content, which has a composition such that the motor lamination steel is fully ferritic at all solid temperatures. The steel preferably includes 1.20-1.40 wt. % silicon, 0.25-0.40 wt. % aluminum, 0.15-0.30 wt. % manganese and not more than 0.005 wt. % carbon. The processes for producing the fully ferritic low loss motor lamination steel include a hot band anneal followed by cold rolling, and a two-stage or double cold roll process.

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